<template>
  <div :class="['tabs-head', layout, pageWidth]">
    <a-tabs
      type="editable-card"
      :class="[
        'tabs-container',
        layout,
        pageWidth,
        {
          affixed: affixed,
          'fixed-header': fixedHeader,
          collapsed: adminLayout.collapsed,
        },
      ]"
      :active-key="active"
      :hide-add="true"
    >
      <a-tooltip placement="left" :title="lockTitle" slot="tabBarExtraContent">
        <a-icon
          theme="filled"
          @click="onLockClick"
          class="header-lock"
          :type="fixedTabs ? 'lock' : 'unlock'"
        />
      </a-tooltip>
      <a-tab-pane v-for="page in pageList" :key="page.path">
        <div
          slot="tab"
          class="tab"
          @contextmenu="(e) => onContextmenu(page.path, e)"
        >
          <a-icon
            @click="onRefresh(page)"
            :class="[
              'icon-sync',
              { hide: page.path !== active && !page.loading },
            ]"
            :type="page.loading ? 'loading' : 'sync'"
          />
          <div class="title" @click="onTabClick(page.path)">
            {{ pageName(page) }}
          </div>
          <a-icon
            v-if="!page.unclose"
            @click="onClose(page.path)"
            class="icon-close"
            type="close"
          />
        </div>
      </a-tab-pane>
    </a-tabs>
    <div v-if="affixed" class="virtual-tabs"></div>
  </div>
</template>

<script>
  import { mapState, mapMutations } from 'vuex'

  export default {
    name: 'TabsHead',
    props: {
      pageList: Array,
      active: String,
      fixed: Boolean,
    },
    data() {
      return {
        affixed: false,
      }
    },
    inject: ['adminLayout'],
    created() {
      this.affixed = this.fixedTabs
    },
    computed: {
      ...mapState('setting', [
        'layout',
        'pageWidth',
        'fixedHeader',
        'fixedTabs',
        'customTitles',
      ]),
      lockTitle() {
        return this.fixedTabs ? '点击解除锁定' : '点击锁定页签头'
      },
    },
    methods: {
      ...mapMutations('setting', ['setFixedTabs']),
      onLockClick() {
        this.setFixedTabs(!this.fixedTabs)
        if (this.fixedTabs) {
          setTimeout(() => {
            this.affixed = true
          }, 200)
        } else {
          this.affixed = false
        }
      },
      onTabClick(key) {
        if (this.active !== key) {
          this.$emit('change', key)
        }
      },
      onClose(key) {
        this.$emit('close', key)
      },
      onRefresh(page) {
        this.$emit('refresh', page.path, page)
      },
      onContextmenu(pageKey, e) {
        this.$emit('contextmenu', pageKey, e)
      },
      pageName(page) {
        const pagePath = page.fullPath.split('?')[0]
        const custom = this.customTitles.find((item) => item.path === pagePath)
        return (custom && custom.title) || page.title
      },
    },
  }
</script>

<style scoped lang="less">
  .tab {
    padding: 0 16px;
    margin: 0 -16px;
    font-size: 14px;
    user-select: none;
    transition: all 0.2s;
    .title {
      display: inline-block;
      height: 100%;
    }
    .icon-close {
      margin-right: -4px !important;
      margin-left: 6px;
      font-size: 12px;
      color: @text-color-second;
      &:hover {
        color: @text-color;
      }
    }
    .icon-sync {
      margin-left: -4px;
      font-size: 14px;
      color: @primary-4;
      transition: all 0.3s ease-in-out;
      &:hover {
        color: @primary-color;
      }
      &.hide {
        font-size: 0;
      }
    }
  }
  .tabs-head {
    margin: 0 auto;
    &.head.fixed {
      width: 1400px;
    }
  }
  .tabs-container {
    margin: -16px auto 8px;
    transition: top, left 0.2s;
    .header-lock {
      font-size: 18px;
      color: @primary-3;
      &:hover {
        color: @primary-color;
      }

      cursor: pointer;
    }
    &.affixed {
      position: fixed;
      top: 0;
      z-index: 1;
      height: 48px;
      padding: 8px 24px 0;
      margin: 0 auto;
      background-color: @layout-body-background;
      &.side,
      &.mix {
        right: 0;
        left: 256px;
        &.collapsed {
          left: 80px;
        }
      }
      &.head {
        width: inherit;
        padding: 8px 0 0;
        &.fluid {
          right: 0;
          left: 0;
          padding: 8px 24px 0;
        }
      }
      &.fixed-header {
        top: 64px;
      }
    }
  }
  .virtual-tabs {
    height: 48px;
  }
</style>
